Aviatrix Gateway to AWS VGW

Overview

This document describes how to configure an IPsec tunnel between an Aviatrix Gateway and an AWS Virtual Private Gateway (VGW).

gw2vgw

Deployment Guide

For this use case, we will configure the AWS VGW VPN connection first and then download the configuration from AWS and import it into Aviatrix.

Create the VPN Connection

Note

Prerequisites

  1. You have a VGW created and attached to a VPC.
  2. You have an Aviatrix Gateway provisioned in a different VPC. You will need this gateway’s public IP address for the steps below.

  1. Log in to your AWS VPC Dashboard in the region where your VGW is located

  2. Create a new Customer Gateway.

    awscg

    Field Description
    Name Enter any name here
    Routing Select Static
    IP Address Enter the Aviatrix Gateway’s public IP

  3. Create a VPN Connection.

    awsvpn

    Field Description
    Name Enter any name here
    Virtual Private Gateway Select your VGW
    Customer Gateway Select Existing
    Routing Options Select Static
    Static IP Prefixes Enter the CIDR(s) of the VPC where the Aviatrix Gateway resides.
    Tunnel Options Leave blank/default

  4. Select the VPN you just created and click the Download Configuration button along the top. At the dialog, select Generic for the Vendor, Generic for the Platform and Vendor Agnostic for the Software.

  5. Click Download Configuration. You will use this file to create the other side of the tunnel.

    awsdownloadvpnconfig

Configuring Aviatrix

  1. Log in to your Aviatrix Controller.

  2. Follow the steps in this guide. Use this table for specific field values.

    Field Description
    VPC ID/VNet Name Select the Aviatrix Gateway VPC or VNet from the drop down.
    Connection Type Unmapped
    Remote Gateway Type AWS VGW
    Algorithms Checked

  3. Populate the remaining fields.

    Field Description
    Remote Gateway IP Address Enter the value that matches the value Tunnel Interface Configuration > Outside IP Addresses > Virtual Private Gateway
    Pre-shared Key Enter the value that matches the value Internet Key Exchange Configuration > Pre-Shared Key
    Remote Subnet Remote subnet is usually the cloud networks for eg., Spoke VPC which onprem wants to reach to (10.20.0.0/20)

    tunnelconfig

Test

Once complete, test the communication using the tunnel.

Troubleshooting

Wait 2-3 minutes for the tunnel to come up. If it does not come up within that time, check the IP addresses to confirm that they are accurate. Additional troubleshooting is available in the Diagnostics tab.

Appendix: Enable HA

You can enable HA for Aviatrix Site2Cloud connection to AWS VGW. Please add the following extra steps to the configuration.

Creating an Aviatrix HA Gateway

Before creating a Site2Cloud connection, follow this guide’s Backup Gateway and Tunnel HA section to create an Aviatrix HA gateway in the same VPC.

Creating a VPN Connection Between VGW and the Aviatrix HA Gateway

From the AWS console, create a new VPN connection between VGW and Aviatrix HA Gateway.

  1. Create a new Customer Gateway for Aviatrix HA Gateway:

    Field Description
    Name Enter any name here
    Routing Select Static
    IP Address Enter the Aviatrix HA Gateway’s public IP

  2. Create a new VPN connection for Aviatrix HA Gateway:

    Field Description
    Name Enter any name here
    Virtual Private Gateway Select the same VGW using for primary VPN connection
    Customer Gateway Select CGW your just created for HA
    Routing Options Select Static
    Static IP Prefixes Enter the CIDR(s) of the VPC where the HA Aviatrix Gateway resides.
    Tunnel Options Leave blank/default

  3. Download the configuration for this new VPN connection just like you did earlier for the primary VPN connection.

Create Aviatrix Site2Cloud Connection with HA

From Aviatrix Controller UI > Site2Cloud page, click + Add New, under Add a New Connection, make sure Enable HA is checked.

Additional fields are displayed when checked.

Note

VPN information for backup needs to be obtained from the downloaded configuration of AWS VPN connection between VGW and Aviatrix HA Gateway. Follow the same steps you did for primary connection.

Field Description
Backup Gateway Select the Aviatrix HA Gateway you just created
Remote Gateway IP Address(Backup) Enter the value that matches the value Tunnel Interface Configuration > Outside IP Addresses > Virtual Private Gateway
Pre-shared Key(Backup) Enter the value that matches the value Internet Key Exchange Configuration > Pre-Shared Key

Other fields should be filled as instructed in above section Configure Aviatrix.